4005988 has 24 divisors (see below), whose sum is σ = 8068032. Its totient is φ = 1704864.

The previous prime is 4005983. The next prime is 4006001. The reversal of 4005988 is 8895004.

It is a super-2 number, since 2×4005988² = 32095879712288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4005983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4431 + ... + 5257.

It is an arithmetic number, because the mean of its divisors is an integer number (336168).

Almost surely, 2^4005988 is an apocalyptic number.

It is an amenable number.

4005988 is an abundant number, since it is smaller than the sum of its proper divisors (4062044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4005988 is a wasteful number, since it uses less digits than its factorization.

4005988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011 (or 1009 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 4005988 is about 2001.4964401667. The cubic root of 4005988 is about 158.8192770157.

The spelling of 4005988 in words is "four million, five thousand, nine hundred eighty-eight".